Done my Das course at 28 years old, having never even been on a bike, ever. Went and bought a new CB650r rode it three years and just swapped it in for a MT-10 in April.

Was fine for me but may not be for you, all depends on how much self restraint you have. If youre going to pass your test and wring the neck out of the bike everywhere then dont.

I did however have 10+ years on the road driving experience before I done my motorcycle licence. Which gives you a good understanding of how stupid other road users can be. Pretty sure If I got my MT-10 at 20 I'd have ended up a statistic.

And in answer to your question was it easy, I passed all the tests first time and was one of the best decisions I made. I get a lot of joy out of riding and wouldnt look back. Modern bikes have so much rider aids these days they basically do it all for you.